Motivational determinants of coalition formation

Coalition preferences of 300 male and female subjects were ascertained under varying motivational conditions. Two of the experimental conditions repeated the typical three-person coalition paradigm, with a monetary reward (extrinsic motivation) offered for the winning of a luck-determined game. In a third condition, skill rather than luck influenced the outcome and no monetary reward was given for winning (intrinsic motivation). Two additional conditions examined coalition preferences in a mixed-motive situation, with either a small or a large monetary reward offered for winning a skill-related game. In the extrinsic motivation condition, the low and the medium resource persons typically desired to coalesce, contrary to the wishes of the excluded, high resource player. In contrast, the coalition between the low and the medium resource persons also was preferred by the high resource player in the intrinsic motivation condition. Coalition conflict was intermediate in the mixed-motive conditions. In sum, it was demonstrated that coalition formation and interpersonal conflict are dependent upon the motivational determinants of group activity.     

Bargaining ability,the utility of playing a game,and models of coalition formation

A utility function for playing a given position in a game is developed as a natural extension of the utility function which defines the rewards available in the game. This function is determined by a player's opinion of his bargaining ability. A characterization of such utilities is obtained which generalizes previous results that the Shapley value and Banzhaf-Coleman index are both cardinal utility functions which reflect different bargaining abilities. The approach taken here is related to models of coalition formation.     

Being in the Game: Effects of Avatar Choice and Point of View on Psychophysiological Responses During Play

The innovative features of multi-player computer games offer compelling opportunities for self-representation during interactions, and the ways in which these avatars are chosen and manipulated may change interactive experiences. This study investigated the effects of avatar choice (choice vs. no choice) and visual point of view (POV; first-person vs. third-person) on the physiological arousal and subjective evaluations of game experiences. A 2 (Avatar Choice, No Avatar Choice) × 2 (first-person POV, third-person POV) × 2 (female players, male players) mixed-design experiment was conducted (N = 22). The results demonstrated that being able to pick the character that will represent the player in the game leads to greater arousal, especially for males. Visual POVs alone did not affect the game player's arousal, but moderated the effect of avatar choice on the game player's heart rates. Avatar choice produced a more pronounced effect in the third-person POV (where the “camera” was located behind the avatar) in which avatar choice was visually more reinforced than in the first-person POV (where the “camera” was the eyes of the avatar). The results also revealed that the gender of the game player was a significant factor in game play experience. The results suggest theoretical implications of video game self-representation and effects on game player's psychophysiological responses.     

Effects of alternatives in coalition bargaining

A critical factor in bargaining and coalition formation is the alternative outcomes of the bargainers if an agreement cannot be reached. In some situations bargainers have individual alternatives while in other situations their alternatives must be negotiated with others. The purpose of this study was to contrast the effects of one-person and two-person alternatives on coalition outcomes. The second purpose of the study was to contrast the predictions of four theories of coalition formation: bargaining theory, equal excess model, Shapley value, and a special case of equity theory. The results indicate that one-person alternatives enhance the bargaining strength of the stronger players more than two-person alternatives. The predictions of the equal excess model and the Shapley value were more accurate than the predictions of bargaining theory and equity theory. However, the greater accuracy of the equal excess model and the Shapley value may be restricted to situations in which the bargainers have one-person rather than two-person alternatives.     

The Effects of Final-Offer Arbitration on the Performance of Major League Baseball Players: A Test of Equity Theory

This study examined potential motivational processes of major league baseball players participating in final-offer arbitration. For baseball players, finaloffer arbitration entails both the player and the team management submitting a nonnegotiable salary figure to an impartial arbitrator. Based on the evidence proferred by the respective parties, the arbitrator adopts either the player's or team's salary figure as the player's compensation for the upcoming season. Using an equity theory perspective, we found support for the prediction that postarbitration player performance was linked to the arbitrator's decision and to the discrepancy between the player's salary request and the team's salary offer. The study's results were discussed in terms of general implications for equity-theory research.     

The interplay of self‐interest and equity in coalition formation

In this paper we investigated the interplay of self‐interest and equity concerns in coalition formation by manipulating the number of units in which the coalition payoff is made available, and by manipulating the way people are allowed to interact. Results of three experiments showed that when the coalition payoff was such that members of each possible coalition could obtain an equitable payoff share, the outcome tended to be coalitions that also maximized the payoff of its members. However, when the payoff was such that people had to make trade‐offs between maximizing their payoff share and obtaining an equitable payoff share, it took longer to form a coalition and it was harder to maintain a coalition. Moreover, depending on the way people were allowed to interact, the final outcome was a coalition that maximized the payoff of its members or a coalition that provided them with an equitable payoff share. Copyright © 2004 John Wiley & Sons, Ltd.     

Psychological reactance and the attractiveness of unobtainable objects: Sex differences in children's responses to an elimination of freedom

This study examined possible sex and age differences in children's perceptions of the attractiveness of unobtainable and obtained objects. Using an experimental paradigm developed by Hammock and J. Brehm (1966), half of the male and female first-grade and sixth-grade subjects were led to expect to choose between two objects; the other half were told they would be given one of two objects, but were not led to expect to choose between these objects. After subjects ranked an array of 10 objects, all subjects were given their third-ranked object and denied their fourth-ranked object. No subject was given any opportunity to indicate a preference or make a choice between these two alternatives. As predicted, subjects' subsequent rankings of the objects differed according to sex. Male subjects behaved in accordance with theoretical predictions based on J. Brehm's theory of psychological reactance and, thus, replicated the results obtained by Hammock and Brehm. The behavior of female subjects did not conform to the reactance theory model. No age differences were predicted and none were obtained. The implications of these results for predicting whether an unobtainable object will become more or less attractive, and for the nature and extent of sex differences in children's responses to the loss of behavioral freedoms, are discussed.     

Small-group effectiveness on an administrative task as influenced by knowledge of results and sex composition of the group

Two experiments were designed to investigate some possible extensions to Locke's theory of task motivation and incentives. In experiment 1 (192 Ss) the effect of KR on small-group effectiveness (SGE) was analyzed. The SGE-measurements (productivity and group atmosphere) were based on a subjective operationalization of the concept ?small-group effectiveness'. Five one-way analyses of variance revealed no significant influence of KR on SGE thus supporting Locke's findings. In experiment 2 (64 Ss) homogeneous male groups were compared to homogeneous female groups to find out whether sex composition of the group would have a significant influence on SGE. Five Fisher t-tests revealed no differences between the means of male and female groups. In this case, too, Locke's theory was supported. Limitations and implications of these results are discussed.     

A Cognitive Model of Dynamic Cooperation With Varied Interdependency Information

We analyze the dynamics of repeated interaction of two players in the Prisoner's Dilemma (PD) under various levels of interdependency information and propose an instance‐based learning cognitive model (IBL‐PD) to explain how cooperation emerges over time. Six hypotheses are tested regarding how a player accounts for an opponent's outcomes: the selfish hypothesis suggests ignoring information about the opponent and utilizing only the player's own outcomes; the extreme fairness hypothesis weighs the player's own and the opponent's outcomes equally; the moderate fairness hypothesis weighs the opponent's outcomes less than the player's own outcomes to various extents; the linear increasing hypothesis increasingly weighs the opponent's outcomes at a constant rate with repeated interactions; the hyperbolic discounting hypothesis increasingly and nonlinearly weighs the opponent's outcomes over time; and the dynamic expectations hypothesis dynamically adjusts the weight a player gives to the opponent's outcomes, according to the gap between the expected and the actual outcomes in each interaction. When players lack explicit feedback about their opponent's choices and outcomes, results are consistent with the selfish hypothesis; however, when this information is made explicit, the best predictions result from the dynamic expectations hypothesis.     

Sex stereotyping of infants: A review of gender labeling studies

Studies that have addressed the question of whether adults and children respond differently to male and female infants because of actual differences in the infants or because of preconceived sex stereotypes are reviewed, and the overall conclusions from these studies are evaluated. Twenty-three studies were identified in which neutrally clothed infant stimuli were labeled male in some conditions and female in other conditions. The strength and consistency of gender labeling effects on perceptions and behaviors in these studies were appraised. The results indicate that knowledge of an infant's gender is not a consistent determinant of adults' reactions, but more strongly influences young children's reactions. The implications of these findings for research on early sex role socialization are considered.     

On coalition formation in simple games: A mathematical analysis of Caplow's and Gamson's theories

In this paper, we propose a theory of coalition formation in simple games. The process of coalition formation is modeled as an abstract game. Two solutions of abstract games, the core and the dynamic solution, are used as the predictions of our model. Two classical theories of coalitions in sociology due to Caplow and Gamson are reformulated in a more general and mathematical setting. These theories are then analyzed using the techniques of our theory.     

Quantified coalition logic

We add a limited but useful form of quantification to Coalition Logic, a popular formalism for reasoning about cooperation in game-like multi-agent systems. The basic constructs of Quantified Coalition Logic (QCL) allow us to express such properties as “every coalition satisfying property P can achieve φ” and “there exists a coalition C satisfying property P such that C can achieve φ”. We give an axiomatisation of QCL, and show that while it is no more expressive than Coalition Logic, it is nevertheless exponentially more succinct. The complexity of QCL model checking for symbolic and explicit state representations is shown to be no worse than that of Coalition Logic, and satisfiability for QCL is shown to be no worse than satisfiability for Coalition Logic. We illustrate the formalism by showing how to succinctly specify such social choice mechanisms as majority voting, which in Coalition Logic require specifications that are exponentially long in the number of agents.     

Players,Characters, and the Gamer's Dilemma

Is there any difference between playing video games in which the player's character commits murder and video games in which the player's character commits pedophilic acts? Morgan Luck's “Gamer's Dilemma” has established this question as a puzzle concerning notions of permissibility and harm. We propose that a fruitful alternative way to approach the question is through an account of aesthetic engagement. We develop an alternative to the dominant account of the relationship between players and the actions of their characters, and argue that the ethical difference between so‐called “virtual murder” and “virtual pedophilia” is to be understood in terms of the fiction‐making resources available to players. We propose that the relevant considerations for potential players to navigate concern (1) attempting to make certain characters intelligible, and (2) using aspects of oneself as resources for homomorphic representation.     

The excluded player in coalition formation

Coalition research generally assumes that people strive to maximize their share of the coalition payoff and that they exclude others from joining a coalition if these others are not needed to obtain the coalition payoff. In two experiments, the authors show that this view is too narrow and that willingness to include such others is dependent on the extent to which people feel that exclusion affects the payoff of the excluded player. This finding was moderated by social value orientations. Proselfs were not affected by the consequences for the excluded players. Prosocials were less willing to exclude others the more harmful were the consequences of exclusion. Results are related to research on social exclusion, the do-no-harm principle, and social value orientations.     

Gender,Leadership Orientation,and Effectiveness: Testing the Theoretical Models of Bolman & Deal and Quinn

This study examined the differences in gender between a “balanced” or “unbalanced” orientation of leadership, leadership characteristics, and the perceived effectiveness of educational leaders through subordinate responses in the context of Bolman and Deal's (1991, 1997) four-frame leadership theory and Quinn's (1988) competing values model. The findings suggest that any differences in the perceived effectiveness of educational leaders in the three leadership type groups are equally true for male and female leaders, and that male and female educational leaders were perceived to be equally effective in their respective organizations despite the stereotypical connotations asserted in previous research. In addition, no significant differences were found between men and women in their leadership characteristics, which stands in contrast to extant research-supported evidence. This study analyzed the ratings of 57 leaders (males = 31; females = 26) by 472 subordinate participants (males = 234; females = 238) from lower, middle, and upper management levels in secondary and postsecondary institutions. Approximately 60% of the participants and one third of the educational leaders were African Americans.     

Television and Sex-Role Stereotyping1

The possible influence of television on sex-stereotyped behavior was investigated in three studies. In Study I the portrayal of male and female central characters on children's Saturday morning television programs was examined, and a number of differences consistent with current sex-role stereotypes were found. Males and females were portrayed in different roles, they manifested different behaviors, and their behaviors were followed by different consequences. In addition, male characters were more frequent than females, and they exhibited higher rates of behavior. Similar differences in the portrayal of males and females in the commercial announcements accompanying these programs were found in Study II. The sexes differed in their frequency of appearance, their location, their roles, their expertise, and the consequences of their behavior. In Study III the effects on children's behavior of exposure to sex-stereotyped vs. non-stereotyped behavior by adult televised models were examined. It was found that children manifested greater imitation and recall for the behavior of a same-sex model with the result that boys exposed to “stereotyped” behavior by a male and female model manifested and recalled relatively more “masculine” behavior than those exposed to “non-stereotyped” behavior, while the opposite trend obtained for girls. Implications of these three studies for television's contribution to sex-stereotyped behavior are discussed.     

Gender Bias in Leader Selection? Evidence from a Hiring Simulation Study

The present research investigated factors that might affect gender discrimination in a hiring simulation context from the perspectives of social role theory and the shifting standards model. Specifically, the experimental study investigated whether gender biases are evident in the screening and hiring stage of the personnel selection process depending on the applicants?? social role and evaluators?? gender. A sample of German undergraduate business students (54 women, 53 men) was asked to make a personnel selection decision (short-listing or hiring) about a fictitious applicant (man or woman) in a specific role (leader or non-leader) for a managerial position. Consistent with social role theory??s assumption that social role information is more influential than gender information, participants selected applicants described as leaders over applicants described as non-leaders, regardless of applicant gender. In addition, in the presence of role information, female applicants portrayed as leaders were similarly short-listed and hired as male applicants with the same credentials. In the absence of role information, female applicants were similarly short-listed as male applicants; however, male applicants were hired over female applicants, albeit by male participants only. This is consistent with the shifting standards model??s assumption that group members are held to a higher standard to confirm traits on which they are perceived to be deficient: Male participants hired female applicants portrayed as non-leaders with less certainty than their male counterparts possibly due to higher confirmatory standards for leadership ability in women than men. The research and practice implications of these results are discussed.     

On Gender Specificity of Person Characteristics in Personnel Advertisements: A Study Among Future Applicants

This research is an examination of how person characteristics mentioned in personnel advertisements influence the judgments of male and female students with regard to their subjective eligibility for, and the attractiveness of, a particular vacancy. The first study showed that many frequently mentioned person characteristics in personnel advertisements applied differently to men and women, but that female characteristics were more in demand than male characteristics. The second study examined to what degree male and female participants felt that they themselves possessed male and female characteristics; results showed that the men were more confident about the degree to which they possessed male and female characteristics than the women were. The third study examined how the type of person characteristics mentioned in personnel advertisements influenced men's and women's judgments regarding their eligibility for and the attractiveness of a particular position. The men found all positions about equally attractive, whereas the women found “male” positions considerably less attractive. Implications of the study are discussed.     

Factors explaining male/female differences in attitudes and purchase intention toward genetically engineered salmon

• Frequently observed male/female differences in attitudes toward genetically engineered (GE) foods have not received adequate explanations. We examined (a) the ability of two hypotheses (safety concern and institutional trust) to explain male/female attitudes toward GE salmon and (b) the effect of attitudes on male/female differences in purchase intent. A survey (n = 501) was administered in two branches of a regional supermarket chain. After reading an information booklet, men and women's scores on a knowledge quiz did not differ but women had significantly more negative attitudes toward GE salmon than men. Attitudinal male/female differences were attributed to women's lower trust in government agencies and scientific organizations, and higher level of perceived health risks compared to men – supporting both hypotheses. But the essential basis of these attitudinal male/female differences appeared to be women's greater concern about the ethics/morality of this application. Attitude differences were the major contributor to male/female differences in purchase intention.

Copyright © 2008 John Wiley & Sons, Ltd.